U.S. patent number 10,356,297 [Application Number 15/402,563] was granted by the patent office on 2019-07-16 for illumination device mounted with a plurality of optical accessories.
This patent grant is currently assigned to CANON KABUSHIKI KAISHA. The grantee listed for this patent is CANON KABUSHIKI KAISHA. Invention is credited to Toshiki Miyakawa, Azusa Sugawara.
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United States Patent |
10,356,297 |
Miyakawa , et al. |
July 16, 2019 |
Illumination device mounted with a plurality of optical
accessories
Abstract
An illumination device capable of enhancing design thereof and
facilitating removable mounting operation of optical accessories. A
bounce adapter 10 and a color filter 20 are mountable to a strobe
device 300 so that the bounce adapter 10 and color filter 20 are
arranged in a front part of a light emitting unit 350. A top
surface 350a of the light emitting unit 350 is provided with an
attachment rib 355a to be engaged with the bounce adapter 10 and
the color filter 20. A bottom cover 353 of the light emitting unit
350 is provided with holes 354a, 354d to be engaged with the bounce
adapter 10 and holes 354b, 354c to be engaged with the color filter
20.
Inventors: |
Miyakawa; Toshiki (Yokohama,
JP), Sugawara; Azusa (Yokohama, JP) |
Applicant: |
Name |
City |
State |
Country |
Type |
CANON KABUSHIKI KAISHA |
Tokyo |
N/A |
JP |
|
|
Assignee: |
CANON KABUSHIKI KAISHA (Tokyo,
JP)
|
Family
ID: |
59276340 |
Appl.
No.: |
15/402,563 |
Filed: |
January 10, 2017 |
Prior Publication Data
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|
|
Document
Identifier |
Publication Date |
|
US 20170201659 A1 |
Jul 13, 2017 |
|
Foreign Application Priority Data
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|
|
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Jan 13, 2016 [JP] |
|
|
2016-004452 |
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F21V
13/02 (20130101); G03B 15/05 (20130101); H04N
5/2256 (20130101); G03B 2215/0592 (20130101); G03B
2215/055 (20130101) |
Current International
Class: |
H04N
5/225 (20060101); G03B 15/05 (20060101); F21V
13/02 (20060101) |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
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2002-169202 |
|
Jun 2002 |
|
JP |
|
2009-020298 |
|
Jan 2009 |
|
JP |
|
Primary Examiner: Mai; Anh T
Assistant Examiner: Chiang; Michael
Attorney, Agent or Firm: Carter, DeLuca & Farrell
LLP
Claims
What is claimed is:
1. An illumination device to which a first optical accessory and a
second optical accessory are mountable so that the first optical
accessory and second optical accessory are arranged in a front part
of a light emitting unit, wherein one of a top surface and a bottom
surface of the light emitting unit is provided with a first
protrusive part to be engaged with the first optical accessory and
a second protrusive part to be engaged with the second optical
accessory, wherein the other of the top surface and the bottom
surface of the light emitting unit is provided with a first
recessed part to be engaged with the first optical accessory and a
second recessed part to be engaged with the second optical
accessory, and wherein the first protrusive part is not lined with
the first recessed part, and the second protrusive part is not
lined with the second recessed part.
2. The illumination device according to claim 1, wherein the first
protrusive part and the second protrusive part are arranged in a
direction substantially perpendicular to an optical axis of the
light emitting unit.
3. The illumination device according to claim 1, wherein the first
protrusive part and the second protrusive part are linearly
arranged in a direction substantially perpendicular to an optical
axis of the light emitting unit.
4. The illumination device according to claim 1, wherein the first
recessed part and the second recessed part are arranged in a
direction substantially perpendicular to an optical axis of the
light emitting unit.
5. The illumination device according to claim 1, comprising: a
first detector configured to detect whether the first optical
accessory is mounted; and a second detector configured to detect
whether the second optical accessory is mounted, wherein the first
detector is disposed in a position corresponding to the first
recessed part and the second detector is disposed in a position
corresponding to the second recessed part.
6. The illumination device according to claim 1, wherein the first
protrusive part and the second protrusive part extend in a
direction substantially perpendicular to an optical axis of the
light emitting unit.
7. The illumination device according to claim 1, wherein the first
protrusive part is farther than the second protrusive part from a
center of the light emitting unit in a direction substantially
perpendicular to an optical axis of the light emitting unit, and
the first recessed part is farther than the second recessed part
from the center of the light emitting unit in the direction
substantially perpendicular to the optical axis of the light
emitting unit.
8. The illumination device according to claim 1, wherein the first
protrusive part is provided to the top surface of the light
emitting unit.
Description
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to an illumination device to which a
plurality of optical accessories is mountable.
Description of the Related Art
Conventionally, a known example of the illumination device to which
the optical accessories are mountable includes a strobe device. A
known example of the optical accessories mounted to an emission
window of a light emitting unit of the strobe device includes a
light diffusion adapter (bounce adapter) and
characteristics-of-color changing filter (color filter). The bounce
adapter is an optical accessory capable of diffusing irradiation
light from the light emitting unit at a wide angle. The color
filter is an optical accessory capable of changing a color
temperature of strobe light.
For example, Japanese Laid-Open Patent Publication (kokai) No.
2002-169202 discloses a bounce adapter removably mounted on a light
emitting unit of a strobe device. In a device disclosed in Japanese
Laid-Open Patent Publication (kokai) No. 2002-169202, the bounce
adapter is removably mountable by using a recessed part provided to
a side surface of the light emitting unit and an engagement
protrusive part formed in an inner surface of the bounce adapter.
However, the device disclosed in Japanese Laid-Open Patent
Publication (kokai) No. 2002-169202 is not configured to
simultaneously or exclusively use optical accessories for different
uses such as the bounce adapter and color filter.
On the other hand, Japanese Laid-Open Patent Publication (kokai)
No. 2009-20298 discloses a technique for correcting a shooting
color temperature by defining recognition signals of every optical
accessories and by reading out recognition information regarding
the optical accessories mounted on a strobe device so as to
recognize types of the optical accessories. However, details on
attachment ways of the optical accessories are not disclosed in
Japanese Laid-Open Patent Publication (kokai) No. 2009-20298.
In general, in order to simultaneously or exclusively use optical
accessories for different uses such as the bounce adapter and color
filter, it is necessary to provide attachment parts respectively
for the bounce adapter and color filter to a light emitting unit.
For example, both side portions of a light emitting unit of a
strobe device are provided with an attachment part for one optical
accessory, and an upper part and lower part of the light emitting
unit are provided with an attachment part for the other optical
accessory. In a case of applying such a configuration, the
attachment parts are exposed from both top and bottom parts as well
as left and right sides when the optical accessories are not
mounted so that the device does not look attractive. Especially,
the both sides of the light emitting unit are conspicuous.
Therefore, providing the recessed part in the side surface of the
light emitting unit as disclosed in Japanese Laid-Open Patent
Publication (kokai) No. 2002-169202 may easily have an effect on
appearance. Therefore, some consideration is needed in order to
improve a design when providing the attachment parts for the
optical accessories.
Considering that a configuration is adopted in which two optical
accessories can be used simultaneously but each optical accessory
should be removably mounted in order. In such a case, a removable
mounting operation is troublesome and there is necessity for
improvement from an operational point of view.
SUMMARY OF THE INVENTION
The present invention provides an illumination device, which is
capable of enhancing design of the illumination device and
facilitating removable mounting operation of optical
accessories.
Accordingly, the present invention provides an illumination device
to which a first optical accessory and a second optical accessory
are mountable so that the first optical accessory and second
optical accessory are arranged in a front part of a light emitting
unit, wherein one of a top surface and a bottom surface of the
light emitting unit is provided with a first protrusive part to be
engaged with the first optical accessory and a second protrusive
part to be engaged with the second optical accessory, and the other
of the top surface and bottom surface of the light emitting unit is
provided with a first recessed part to be engaged with the first
optical accessory and a second recessed part to be engaged with the
second optical accessory.
According to an embodiment of the present invention, it is possible
to enhance the design of the illumination device and to facilitate
the removable mounting operation of the optical accessories.
Further features of the present invention will become apparent from
the following description of exemplary embodiments (with reference
to the attached drawings).
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a block diagram showing a configuration of an image
pickup system including an illumination device.
FIGS. 2A to 2C are perspective views of a bounce adapter.
FIGS. 2D to 2G are perspective views of a color filter.
FIG. 3 is a perspective view of a light emitting unit.
FIG. 4A is a perspective view of a light emitting unit.
FIG. 4B is a perspective view showing a state that the bounce
adapter and color filter are combined.
FIG. 5A is a schematic side view of an engagement part between a
front upper part of the light emitting unit and recessed rail
parts.
FIG. 5B is a perspective view showing a state that the bounce
adapter and color filter are mounted.
FIG. 6 is a perspective view of a light emitting unit according to
a second embodiment.
DESCRIPTION OF THE EMBODIMENTS
Hereinafter, an embodiment of the present invention will be
described with reference to the accompanying drawings.
FIG. 1 is a block diagram showing a configuration of an image
pickup system including an illumination device according to a first
embodiment of the present invention. The image pickup system
includes a camera body 100 which is an image pickup apparatus, a
lens unit 200 which is removably mountable on the camera body 100,
and a strobe device 300 which is an illumination device removably
mountable on the camera body 100. In regard to a vertical direction
of the strobe device 300, it should be noted that a vertical
direction in FIG. 1 corresponds to that of the strobe device 300.
In regard to a longitudinal direction of the strobe device 300, it
should be noted that a left side of FIG. 1 is a front side. A
bounce adapter 10 (first optical accessory) and a color filter 20
(second optical accessory) are illustrated as optical accessories.
Those optical accessories are removably mountable on a front part
of a light emitting unit 350 of the strobe device 300. The bounce
adapter 10 is a light diffusion adapter capable of diffusing light
transmitting therethrough. The color filter 20 is a
characteristics-of-color changing filter capable of changing
characteristics of color of the light transmitting therethrough.
The strobe device 300 mounted (fitted) with the bounce adapter 10
and color filter 20 is defined as an illumination system
herein.
First, a configuration of the camera body 100 will be described. A
camera microcomputer (CCPU) 101 controls each part of the camera
body 100. Examples of an image pickup device 102 are CCD and CMOS.
When not shooting, a shutter 103 shades the image pickup device
102. When shooting, the shutter 103 is driven to introduce luminous
flux into the image pickup device 102. When not shooting, a main
mirror (half mirror) 104 reflects some light incident from a lens
group 202 (to be mentioned later) and forms an image on a focusing
plate 105. The image on the focusing plate 105 is guided to an
optical finder and the like through a pentaprism 114 and is used
for confirmation of a focusing state of a subject to be shot. A
photometry circuit 106 includes a photometry sensor (AE sensor) and
a focus detection circuit 107 includes a focus detection sensor (AF
sensor). A gain conversion circuit (GCC) 108 converts amplification
gain of a signal from the image pickup device 102.
An A/D converter 109 converts an amplified analog signal from the
image pickup device 102 to a digital signal. A timing generator
(TG) 110 synchronizes the signal from the image pickup device 102
and a conversion timing in the A/D converter 109. A signal
processing circuit (SPC) 111 conducts image processing including
white balance control with respect to image data converted to the
digital signal by the A/D converter 109. A signal line SC is a
communication line in an interface between the camera body 100,
lens unit 200, and strobe device 300. An input unit (IU) 112
includes various operation parts such as a release switch for
starting a shooting operation. A displaying unit (DU) 113 displays
various settings, shooting information, and the like. The
pentaprism 114 guides luminous flux incident from the lens group
202 and reflected off the main mirror 104 into the AE sensor inside
the photometry circuit 106 and into the optical finder. A sub
mirror 115 guides luminous flux incident from the lens group 202
and transmitted through a semitransparent part of a center of the
main mirror 104 into the AF sensor of the focus detection circuit
107.
Next, an internal configuration and operation of the lens unit 200
will be described. A lens microcomputer (LPU) 201 controls
operations of each part in the lens unit 200. The lens group 202
includes a plurality of lens. A lens driving part (LD) 203 moves
the lens group 202 in accordance with instructions from the lens
microcomputer 201, for example, changes in focus adjustment and a
focus distance. An encoder (EN) 204 detects a position of the lens
group 202 or a driving rate of the lens group 202. A diaphragm 205
adjusts an amount of the light incident upon the image pickup
device 102 by changing a diameter of an aperture. The diaphragm 205
is controlled by the lens microcomputer 201 through a diaphragm
control circuit (DC) 206.
Next, a configuration of the strobe device 300 as the illumination
device will be described. A body of the strobe device 300 is
provided with a strobe microcomputer (FPU) 310, input unit 320, and
displaying unit 321. The body of the device is also provided with a
battery 301, booster circuit (BC) 302, main capacitor 303, resistor
304, resistor 305, integrated circuit (IC) 309, AND gate 311,
comparator 312, voltage detection circuit 313, photodiode 323, and
the like. The light emitting unit 350 is disposed in the front part
of the strobe device 300 (a subject side). The light emitting unit
350 is connected to the body of the device by a hinge system (not
shown) and is pivotable in the vertical direction for shooting with
bounce flash.
The light emitting unit 350 mainly includes a trigger circuit (TC)
306, discharge tube 307, emission control circuit (EC) 308,
reflective umbrella 315, Fresnel lens 316, accessory determination
unit 322, zoom monitor (ZM) 325, and the like. The trigger circuit
306 is connected to the strobe microcomputer 310 and outputs
trigger voltage when the discharge tube 307 emits light and the
trigger circuit 306 receives a trigger signal from the strobe
microcomputer 310. The discharge tube 307 is a main light source
configured to emit light with using energy charged in the main
capacitor 303 when the trigger voltage of several KV is applied
from the trigger circuit 306 and is stimulated. The emission
control circuit 308 controls light emission of the discharge tube
307.
The reflective umbrella 315 reflects light emitted from the
discharge tube 307 in an incident direction (in front of an optical
axis C0) of the light emitting unit 350. The Fresnel lens 316
reduces nonuniformity in the light emitted from the discharge tube
307. The Fresnel lens 316 is also an irradiation part which widens
an irradiation range of the light emitted from the discharge tube
307. When flush light emitted from the discharge tube 307 is
reflected off the reflective umbrella 315, the Fresnel lens 316
controls light distribution of luminous flux of the reflected flush
light. It is possible to change a guide number and the light
distribution by changing a relative distance between the reflective
umbrella 315 and Fresnel lens 316. The zoom motor 325 includes a
zoom circuit and encoder and moves the reflective umbrella 315 and
discharge tube 307 to predetermined positions. The input unit (IU)
320 includes various operation parts for inputting settings and the
like of the strobe device 300. The displaying unit 321 displays
various states and the like of the strobe device 300.
The strobe microcomputer 310 controls operations of each part in
the strobe device 300 The strobe microcomputer 310 is configured to
be a one-chip IC circuit with a built-in microcomputer including,
for example, CPU, ROM, RAM, input/output control circuit (I/O
control circuit), multiplexer, timer circuit, EEPROM, A/D
converter, and D/A converter. The accessory determination unit 322
is a detection unit configured to detect whether the removably
mountable bounce adapter 10 and color filter 20 are mounted on the
light emitting unit 350. Based on detection results of the
accessory determination unit 322, the strobe microcomputer 310
determines whether the bounce adapter 10 and color filter 20 are
mounted. Detailed configurations of the bounce adapter 10 and color
filter 20 and a method for determining whether they are mounted
will be described later.
The strobe microcomputer 310 includes color temperature information
of the mounted optical accessories (bounce adapter and color
filter). The color temperature information is transmitted to the
camera body 100 through the signal line SC. Based on the color
temperature information transmitted from the strobe device 300, the
camera body 100 corrects color information in accordance with white
balance during shooting. In a case where the strobe microcomputer
310 recognizes that the bounce adapter 10 is mounted, the strobe
microcomputer 310 moves the irradiation part including the
reflective umbrella 315 and discharge tube 307 to a preferable
zooming position with using the zoom motor 325.
FIGS. 2A to 2C are perspective views of the bounce adapter 10.
FIGS. 2D to 2F are perspective views of the color filter 20. In
regard to the color filter 20 herein, it should be noted that
different types of filters 20 are selectively mountable. In
referring to those filters 20 independently, they will be described
as color filters 20-1, and 20-2 respectively. FIGS. 2D to 2F show
the color filter 20-1, and FIG. 2G shows partial perspective view
of the color filter 20-2. In regard to the vertical and
longitudinal directions of the bounce adapter 10 and color filter
20, vertical and longitudinal directions in a state where they are
mounted on the light emitting unit 350 of the strobe device 300 are
applied. In FIG. 2A, FIG. 2B, FIG. 2D, FIG. 2E, the bounce adapter
10 and color filter 20 are seen from obliquely above. In FIG. 2C,
FIG. 2F, the bounce adapter 10 and color filter 20 are seen from
obliquely below.
The bounce adapter 10 and color filter 20 both include side plates
in top and bottom, left and right sides. As shown in FIG. 2B,
inside (in an upper surface of) a bottom plate of the bounce
adapter 10, protrusive parts 11, 12 are protrusively arranged in
the horizontal direction. A detection protrusive part 11a is formed
on an end of the protrusive part 11. Furthermore, two receiving
ribs 13a, 13b are formed inside the bottom plate of the bounce
adapter 10. These receiving ribs 13a, 13b are useful in a case
where the color filter 20 and bounce adapter 10 are both mounted on
the light emitting unit 350 and then the bounce adapter 10 and
color filter 20 are simultaneously removed from the light emitting
unit 350. Details of remove are described later. A front part of
the bottom plate of the bounce adapter 10 is a finger hook part 15.
As shown in FIG. 2C, recessed rail parts 14a, 14b are formed inside
(a lower surface of) a top plate of the bounce adapter 10. Seen
from a side surface, each of the recessed rail parts 14a, 14b is
formed to include a hooked part and extends in the horizontal
direction. Cross sectional shapes of the recessed rail parts 14a,
14b are similar to each other and positions thereof in the
longitudinal direction thereof are also similar to each other.
As shown in FIG. 2E, an extension piece 25 is extensionally
provided frontward from the bottom plate of the color filter 20,
and a front part of the extension piece 25 functioning as a finger
hooking piece is a finger hooking part 24. Protrusive parts 21, 22
are protrusively arranged in the horizontal direction inside (an
upper surface of) the extension piece 25. Especially, a detection
protrusive part 22a is formed in an end of the protrusive part 22
of the color filter 20-1. A recessed rail part 23 is formed inside
(in a lower surface of) a top plate of the color filter 20 (FIG.
2F). The recessed rail part 23, having a cross sectional shape
similar to that of the recessed rail parts 14a and 14b, is formed
to include a hooked part seen from a side surface and extends in
the horizontal direction. When the bounce adapter 10 and color
filter 20 are mounted on the light emitting unit 350, the recessed
rail parts 14a, 23, 14b are arranged in a straight line in the
horizontal direction or a direction perpendicular to the optical
axis C0.
In regard to the color filter 20-2, optical characteristics
(colors) are different from that of the color filter 20-1 and the
protrusive parts 21, 22 in the extension piece 25 are also
different in shape as shown in FIG. 2G. For example, the detection
protrusive part is not provided to the end of the protrusive part
22 in the color filter 20-2. Instead, the detection protrusive part
21a is provided to an end of the protrusive part 21.
FIG. 3 is a perspective view of the light emitting unit 350 showing
that a bottom cover is separated. In FIG. 3, the light emitting
unit 350 is seen from the front and from obliquely below. A bottom
cover 353 is disposed in a bottom part of the light emitting unit
350. A lower surface of the bottom cover 353 is a bottom surface
350b of the light emitting unit 350. A flexible substrate 400 is
provided to a bottom surface covered by the bottom cover 353 in the
light emitting unit 350. Connection parts for a detection switch
400a, 400b, 400c as detection parts are provided to the flexible
substrate 400.
Substantially, rectangular-shaped holes 354a, 354b, 354c, 354d are
formed in the bottom cover 353 so as to be arranged in a direction
perpendicular to the optical axis C0 (in the horizontal direction).
Corresponding to the connection parts for the detection switch
400a, 400b, 400c, detection switch seals 351a, 351b, 351c which
function as drip-proof seals are provided to the bottom surface
covered by the bottom cover 353 in the light emitting unit 350. The
detection switch seals 351a, 351b, 351c normally press detective
protrusions 352a, 352b, 352c respectively against the bottom cover
353. Position of the holes 354a, 354b, 354c, detection switch seals
351a, 351b, 351c, detective protrusions 352a, 352b, 352c, and
connection parts for the detection switch 400a, 400b, 400c
respectively correspond to positions of the protrusive parts 11,
21, 12. The hole 354d corresponds to the protrusive part 22. It
should be noted that the detective protrusions 352, detection
switch seals 351, and connection parts for the detection switch
400a to 400c corresponding to each hole 354 are included in the
accessory determination unit 322 (FIG. 1).
When mounting the bounce adapter 10 on the light emitting unit 350,
the holes 354a, 354d function as first fitting parts (first
recessed parts) in which the protrusive parts 11, 12 are fitted.
When mounting the color filter 20 on the light emitting unit 350,
the holes 354b, 354c function as second fitting parts (second
recessed parts) in which the protrusive parts 21, 22 are
fitted.
In the present embodiment, the holes 354a to 354c or the recessed
parts function as attachment parts for the bounce adapter 10 or
color filter 20. Furthermore, the holes 354a to 354c partially are
used in detecting the attachment of the bounce adapter 10 or color
filter 20. First, when the bounce adapter 10 is mounted, the
detection protrusive part 11a (FIG. 2B) pushes up the detective
protrusion 352a. Then, the detection switch seal 351a comes into
contact with the connection part for the detection switch 400a and
is electrically conducted so that the bounce adapter 10 is detected
to be mounted completely. When the color filter 20-1 is mounted,
the detection protrusive part 22a (FIG. 2E) of the protrusive part
22 pushes up the detective protrusion 352c. Then, the detection
switch seal 351c comes into contact with the connection part for
the detection switch 400c and is electrically conducted so that the
color filter 20-1 is detected to be mounted completely. When the
color filter 20-2 is mounted, the detection protrusive part 21a
(FIG. 2G) of the protrusive part 21 pushes up the detective
protrusion 352b. Then, the detection switch seal 351b comes into
contact with the connection part for the detection switch 400b and
is electrically conducted so that the color filter 20-2 is detected
to be mounted completely.
It should be noted that the number of the holes 354, detective
protrusions 352, connection parts for the detection switch 400a to
400c and detection switch seals 351 shown herein is an example and
may be increased or decreased in accordance with types and
combination of the bounce adapter 10 and color filter 20. For
example, in regard to the color filter 20, two types are assumed to
be selectively mounted herein but three or more types thereof are
also applicable. Furthermore, a plurality of types of the bounce
adapter 10 may also be selectively mountable. In such a case, the
number of the holes 354, detective protrusions 352, connection
parts for the detection switch 400a to 400c and detection switch
seals 351 are increased. With an increase in the number of such
members, protrusive parts similar to the protrusive parts 21, 22,
and protrusive parts 11, 12 may be further added and additional
detection protrusive parts may be preferably provided to ends of
the added protrusive parts corresponding to type applied
herein.
FIG. 4A is a perspective view of the light emitting unit 350. In
FIG. 4A, the light emitting unit 350 is seen from obliquely above.
The light emitting unit 350 includes an emission window 356 in a
front part thereof. The bounce adapter 10 and color filter 20 are
mounted on the emission window 356. An upper edge 356a is included
in an upper part of the emission window 356 and a lower edge 356b
opposing to the upper edge 356a is included in a lower part of the
emission window 356.
A wide panel covering 355 is disposed in an upper part of the light
emitting unit 350. An upper surface of the wide panel covering 355
is a top surface 350a of the light emitting unit 350. A front
peripheral part of the wide panel covering 355, that is, a
frontmost part of the top surface 350a (an upper part of the upper
edge 356a) of the light emitting unit 350 is formed with a
protrusive attachment rib 355a. The attachment rib 355a is one
piece of a protrusion extending in the horizontal direction and is
substantially parallel to the upper edge 356a and substantially
perpendicular to the optical axis C0. The attachment rib 355a
functions as a first engagement part (first protrusive part)
engaged with the recessed rail parts 14a, 14b when the bounce
adapter 10 is mounted. The attachment rib 355a also functions as a
second engagement part (second protrusive part) engaged with the
recessed rail part 23 when the color filter 20 is mounted.
Triangular ribs 355b, 355c are formed in two adjacent positions in
a back of the attachment rib 355a of the wide panel covering 355.
The triangular ribs 355b, 355c are disposed in positions where the
attachment rib 355a is substantially divided into three along the
horizontal direction. An interval of the triangular ribs 355b, 355c
is modestly larger than a width of the recessed rail part 23 of the
color filter 20 in the horizontal direction. In mounting the color
filter 20, the triangular ribs 355b, 355c sandwich the recessed
rail part 23 of the color filter 20 and function as attachment
guides of the color filter 20. Accordingly, a position of the color
filter 20 in the horizontal direction is appropriately controlled
so that the color filter 20 can be mounted smoothly.
FIG. 4B is a perspective view of a state in which the bounce
adapter 10 and color filter 20 are combined. When the bounce
adapter 10 and color filter 20 are mounted on the emission window
356 of the light emitting unit 350, the color filter 20 is housed
in the bounce adapter 10 as shown in FIG. 4B.
Hereinafter described is a method for removably mounting the bounce
adapter 10 and color filter 20 on the emission window 356 of the
light emitting unit 350. FIG. 5A is a schematic side view of an
engagement part between a front upper part of the light emitting
unit 350 and recessed rail parts 14a, 14b, 23 of the bounce adapter
10 and color filter 20. FIG. 5B is a perspective view showing a
state where the light emitting unit 350 is mounted with the bounce
adapter 10 and color filter 20. In FIG. 5B, the light emitting unit
350 is seen from obliquely below.
First, in a case where the color filter 20 is independently mounted
on the light emitting unit 350, a hooked part of the recessed rail
part 23 is engaged with the attachment rib 355a from a backside
thereof and is pivoted in an A direction shown in FIG. 5A. At that
time, the color filter 20 is pivoted centering on a part where the
recessed rail part 23 and attachment rib 355a are engaged. A
pivotal axis of this part is substantially fixed and is referred to
as a second pivotal axis AX2. As the color filter 20 is
continuously pivoted in the A direction centering on the second
pivotal axis AX2, the protrusive parts 21, 22 eventually fit with
the holes 354b, 354c. Accordingly, the color filter 20 is
completely mounted.
On the other hand, in a case where the bounce adapter 10 is
independently mounted on the light emitting unit 350, hooked parts
of the recessed rail parts 14a, 14b are engaged with the attachment
rib 355a from the backside thereof and are pivoted in the A
direction shown in FIG. 5A. As that time, the bounce adapter 10 is
pivoted centering on a part where the recessed rail parts 14a, 14b
and attachment rib 355a are engaged. A pivotal axis of this part is
substantially fixed and is referred to as a first pivotal axis AX1.
Herein, shapes of the recessed rail parts 14a, 14b, 23 seen from
the side surface are equivalent so that the first pivotal axis AX1
and second pivotal axis AX2 are substantially equal. As the bounce
adapter 10 is pivoted continuously in the A direction centering on
the first pivotal axis AX1, the protrusive parts 11, 12 eventually
fit the holes 354a, 354d. Accordingly, the bounce adapter 10 is
completely mounted.
The color filter 20 can be housed in the bounce adapter 10 so that
there is no difference between an operation of mounting the bounce
adapter 10 with the color filter 20 being mounted and an operation
of mounting the bounce adapter 10 independently. Furthermore, the
first pivotal axis AX1 and second pivotal axis AX2 are equal from a
point of view of design and are substantially equal even though
errors during manufacture or operation are taken into
consideration. Therefore, it is possible to combine the color
filter 20 and bounce adapter 10 and then mount them
simultaneously.
In a case of mounting simultaneously, the color filter 20 and
bounce adapter 10 are preferably combined as shown in FIG. 4B
before mounted. When the color filter 20 is appropriately housed in
the bounce adapter 10, the recessed rail parts 14a, 23, 14b are
arranged in a straight line. With the color filter 20 and bounce
adapter 10 combined, the hooked parts of the recessed rail parts
14a, 23, 14b are engaged with the attachment rib 355a from the
backside thereof and are pivoted in the A direction shown in FIG.
5A centering on the first pivotal axis AX1 (and the second pivotal
axis AX2). With the color filter 20 and bounce adapter 10 pivoted
in the A direction, the protrusive parts 21, 22 eventually fit with
holes 354b, 354c. Almost at the same time, the protrusive parts 11,
12 fit with holes 354a, 354d. Accordingly, the color filter 20 and
the bounce adapter 10 are completely mounted substantially
simultaneously.
Next, in a case where the bounce adapter 10 is removed
independently, the finger hooking part 15 is operated downward as
shown by an arrow in FIG. 5B so as to release the fitting of the
protrusive parts 21, 22 and holes 354b, 354c. Then, the bounce
adapter 10 is pivoted in a B direction shown in FIG. 5A centering
on the first pivotal axis AX1 so as to be removed. There is no
difference between an operation of removing the bounce adapter 10
with the color filter 20 being mounted and an operation of removing
the bounce adapter 10 independently. On the other hand, in a case
of removing the color filter 20 when the color filter 20 is mounted
independently, the finger hooking part 24 is operated downward as
shown by the arrow in the FIG. 5B so as to release the fitting of
the protrusive parts 21, 22 and holes 354b, 354c. Then, the color
filter 20 is pivoted in the B direction shown in FIG. 5A centering
on the second pivotal axis AX2 so as to be removed.
Furthermore, it is possible to remove the bounce adapter 10 and
color filter 20 simultaneously with the bounce adapter 10 and color
filter 20 mounted together. In such a case, first, the finger
hooking part 24 of the color filter 20 is operated downward as
shown by the arrow in FIG. 5B. Accordingly, the fitting of the
protrusive parts 21, 22 and holes 354b, 354c is initially released.
At that time, the receiving ribs 13a, 13b of the bounce adapter 10
opposing to the extension piece 25 of the color filter 20 receive
the extension piece 25. As the finger hooking part 24 is operated
further downward, the fitting of the protrusive parts 11, 12 and
holes 354a, 354d of the bounce adapter 10 is released. The
receiving ribs 13a, 13b are in contact with the extension piece 25
of the color filter 20 so that the protrusive parts 11, 12 can be
easily removed from the holes 354a, 354d without touching the
finger hooking part 15. Then, the bounce adapter 10 and color
filter 20 are pivoted in the B direction shown in FIG. 5A centering
on the first pivotal axis AX1 (and second pivotal axis AX2) so as
to be removed.
According to the present embodiment, by pivoting the color filter
20 centering on the second pivotal axis AX2 with the recessed rail
part 23 engaged with the attachment rib 355a, the color filter 20
is independently removably mountable. The protrusive parts 21, 22
of the color filter 20 are fitted with the holes 354b, 354c of the
light emitting unit 350 when mounting the color filter 20, and the
fitting of the protrusive parts 21, 22 and holes 354b, 354c is
released when removing the color filter 20. Regardless of whether
the color filter 20 is mounted, the bounce adapter 10 is
independently removably mountable by pivoting the bounce adapter 10
centering on the first pivotal axis AX1 with the recessed rail
parts 14a, 14b engaged with the attachment rib 355a. The protrusive
parts 11, 12 of the bounce adapter 10 are fitted with the holes
354a, 354d of the light emitting unit 350 when mounting the bounce
adapter 10, and the fitting of the protrusive parts 11, 12 and
holes 354a, 354d is released when removing the bounce adapter 10.
Accordingly, it is possible to facilitate a removable mounting
operation of the optical accessories. Herein, the attachment rib
355a commonly used by the bounce adapter 10 and color filter 20 is
provided to the upper edge 356a among every edges surrounding the
emission window 356, and the holes 354a, 354d are provided to the
lower edge 356b among the edges. In other words, there is no need
to provide mechanisms for attaching the bounce adapter 10 and color
filter 20 to both side portions of the emission window 356 so that
the both side portions which are conspicuous may have a clear-cut
appearance. Accordingly, it is possible to enhance a design of an
illumination device by disposing mechanisms for removably mounting
the two optical accessories in the same side of the emission window
356.
Furthermore, the first pivotal axis AX1 and second pivotal axis AX2
are substantially equal so that the color filter 20 and bounce
adapter 10 can be smoothly pivoted when removably mounting the
color filter 20 and bounce adapter 10 on the emission window 356
with the color filter 20 and bounce adapter 10 combined.
Consequently, it is possible to facilitate the operation of
integrally pivoting the two optical accessories and removably
mounting those two optical accessories simultaneously. What is
more, the holes 354a, 354d and holes 354b, 354c are disposed in
positions substantially equal in the direction of the optical axis
C0 so that the color filter 20 and bounce adapter 10 can be
simultaneously mounted more smoothly.
Furthermore, in mounting the color filter 20, the triangular ribs
355b, 355c function as the attachment guides for the color filter
20 and also function as control units configured to appropriately
control the position of the color filter 20 in the horizontal
direction. Accordingly, the color filter 20 can be easily and
smoothly mounted on an appropriate position. Furthermore, when the
finger hooking part 24 of the color filter 20 is operated downward
so as to release the fitting of the protrusive parts 21, 22 and
holes 354b, 354c, the receiving ribs 13a, 13b of the bounce adapter
10 function as connecting parts which receive the extension piece
25 of the color filter 20. Consequently, it is possible to further
facilitate the operation of integrally pivoting the two optical
accessories and removing those two members simultaneously. The
attachment rib 355a commonly used by the bounce adapter 10 and
color filter 20 is formed as one piece of the protrusion and hence
have a simple configuration.
The detection protrusive part 22a provided to the protrusive part
22 and the detection protrusive part 21a provided to the protrusive
part 21 are prepared corresponding to the types of the color filter
20, and the type of the completely mounted color filter 20 is
detected based on the fitting of the protrusive parts 21, 22 and
holes 354b, 354c. The protrusive parts 21, 22 also function as
fitting mechanisms for mounting. Therefore, it is possible to
achieve a mounting detection system for a plurality of types of the
color filter 20 with a simple configuration. As mentioned above, it
should be noted that, in regard to the bounce adapter 10, a
mounting detection system for a plurality of types of the bounce
adapter 10 may also be achieved with a simple configuration.
In the first embodiment, the attachment rib 355a is configured to
be one piece of the protrusion commonly used for attachment of the
bounce adapter 10 and color filter 20. On the other hand, in a
second embodiment of the present invention, an attachment rib 355a
for the bounce adapter 10 and that for the color filter 20 are
provided to different positions in the direction of the optical
axis C0.
FIG. 6, corresponding to FIG. 4A, is a perspective view of a light
emitting unit 350 of the strobe device 300 according to a second
embodiment. The front peripheral part of the wide panel covering
355, that is, the frontmost part of the top surface 350a (the upper
part of the upper edge 356a) of the light emitting unit 350 is
formed with attachment ribs 355a-1, 355a-2, 355a-1. These
attachment ribs 355a-1, 355a-2 are substantially parallel to the
upper edge 356a and substantially perpendicular to the optical axis
C0. Compared with the two attachment ribs 355a-1, the attachment
rib 355a-2 in the middle is disposed modestly backward in the
direction of the optical axis C0. The triangular ribs 355b, 355c
are adjacently formed in both ends of the attachment rib 355a-2.
The two attachment ribs 355a-1 function as first engagement parts
engaged with the recessed rail parts 14a, 14b when mounting the
bounce adapter 10, while the attachment rib 355a-2 functions as a
second engagement part engaged with the recessed rail part 23 when
mounting the color filter 20. In the direction of the optical axis
C0, when the bounce adapter 10 and color filter 20 are mounted,
positions of the recessed rail parts 14a, 14b of the bounce adapter
10 and a position of the recessed rail part 23 of the color filter
20 are different in accordance with a difference between positions
of the attachment ribs 355a-1 and attachment rib 355a-2. The other
configurations are similar to those in the first embodiment.
The positions of the attachment ribs 355a-1 and attachment rib
355a-2 in the direction of the optical axis C0 are different. In
accordance with such a difference, the second pivotal axis AX2 is
thus located backwards compared with the first pivotal axis AX1.
The operation of removably mounting the bounce adapter 10 or the
color filter 20 independently is similar to that in the first
embodiment and each operation can be carried out smoothly. On the
other hand, the pivotal axes AX1, AX2 are not remotely separated
but are adjacently abutted so that even when removably mounting the
bounce adapter 10 and color filter 20 combined with each other, the
bounce adapter 10 and color filter 20 are pivoted centering on one
of the pivotal axes AX1, AX2, or centering on a position between
the pivotal axes AX1, AX2 as a new pivotal axis. Therefore, the
bounce adapter 10 and color filter 20 can be removably mounted
simultaneously.
According to the present embodiment, an effect similar to the first
embodiment can be achieved not only in regard to enhancement of the
design of the illumination device by disposing mechanisms for
removably mounting the two optical accessories in the same side of
the emission window 356 but also in regard to facilitation of the
operation of removably mounting the optical accessories.
It should be noted that a disposition relationship between the
attachment ribs 355a-1 and attachment rib 355a-2 in the direction
of the optical axis C0 may be inverted compared with the example
shown in FIG. 6.
It should be noted that the positions where the engagement part and
fitting part are disposed may be inverted in the vertical direction
in each of the abovementioned embodiments. Accordingly, the first
engagement parts (355a, 355a-1) and second engagement parts (355a,
355a-2) are provided to one of the top surface 350a or bottom
surface 350b of the light emitting unit 350. The first fitting
parts (354a, 354d) and second fitting parts (354b, 354c) may be
preferably provided to the other surface of the top surface 350a or
bottom surface 350b of the light emitting unit 350.
In each of the abovementioned embodiment, it should be noted that
respective relational shapes of the first engagement parts (355a,
355a-1) and first parts corresponding to the engagement parts (14a,
14b) may be interchanged compared with the example described above.
Similarly, respective relational shapes of the second engagement
parts (355a, 355a-2) and a second part corresponding to the
engagement parts (23) may be interchanged compared with the example
described above. Furthermore, respective relational shapes of the
first fitting parts (354a, 354d) and first parts corresponding to
the fitting parts (11, 12), and respective relational shapes the
second fitting parts (354b, 354c) and second parts corresponding to
the fitting parts (21, 22) may also be interchanged compared with
the examples described above.
Furthermore, the first engagement parts (355a, 355a-1), second
engagement parts (355a, 355a-2), first fitting parts (354a, 354d),
and second fitting parts (354b, 354c) are provided to an outside of
the emission window 356. However, they may be provided to an inside
of the emission window 356. By the way, they are provided to the
upper edge 356a and lower edge 356b of the emission window 356.
However, from a point of view of achieving facilitation of
removably mounting the optical accessories, it should be noted that
they may also be provided to each edge in the left and right
instead of each edge in the top and bottom so that the optical
accessories may be pivoted in the horizontal direction.
It should be noted that the color filter 20 is fitted inside the
bounce adapter 10, but an inverted configuration may also be
applicable. Uses and types of the optical accessories mounted on
the light emitting unit 350 should not be restricted to the
embodiments described above. Furthermore, the number of the optical
accessories simultaneously mountable to the light emitting unit 350
may be three or more. Among those optical accessories, the present
invention may be applicable to a relationship between two of
them.
Other Embodiments
While the present invention has been described with reference to
exemplary embodiments, it is to be understood that the invention is
not limited to the disclosed exemplary embodiments. The scope of
the following claims is to be accorded the broadest interpretation
so as to encompass all such modifications and equivalent structures
and functions.
This application claims the benefit of Japanese Patent Applications
No. 2016-004452, filed Jan. 13, 2016 which is hereby incorporated
by reference wherein in its entirety.
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